公开(公告)号：US20150258496A1

公开(公告)日：2015-09-17

申请号：US14723688

申请日：2015-05-28

Applicant: Clean Diesel Technologies, Inc.

Inventor： Randal L. Hatfield ,  Stephen J. Golden

IPC: B01D53/94 ,  B01J21/04 ,  B01J23/46 ,  B01J23/20 ,  B01J23/10 ,  B01J35/00 ,  B01J23/889

CPC classification number: B01D53/9477 ,  B01D53/945 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/2065 ,  B01D2255/2066 ,  B01D2255/2068 ,  B01D2255/20715 ,  B01D2255/2073 ,  B01D2255/20761 ,  B01D2255/2092 ,  B01D2255/405 ,  B01D2255/9022 ,  B01D2255/908 ,  B01J23/005 ,  B01J23/40 ,  B01J23/8892 ,  B01J23/8986 ,  B01J35/0006 ,  B01J37/0244 ,  B01J2523/00 ,  Y02T10/22 ,  B01J2523/17 ,  B01J2523/48 ,  B01J2523/56 ,  B01J2523/72 ,  B01J2523/3718

Abstract: Hybrid PGM-ZPGM three-way catalyst (TWC) exhaust treatment systems are disclosed. The hybrid PGM-ZPGM TWC systems include a PGM close-coupled catalytic converter followed by an underfloor catalytic converter. The underfloor catalytic converter includes a ZPGM-based catalyst. Additionally, the underfloor catalytic converter can also be a PGM/ZPGM zone coated catalytic converter. The disclosed hybrid TWC systems comprising PGM-based and ZPGM-based catalysts can replace pure PGM-based exhaust treatment systems.

Abstract translation: 公开了混合PGM-ZPGM三元催化剂（TWC）排气处理系统。 混合PGM-ZPGM TWC系统包括PGM紧耦合催化转化器，随后是地板下催化转化器。 地板下催化转化器包括基于ZPGM的催化剂。 此外，地板下的催化转化器也可以是PGM / ZPGM区域涂层催化转化器。 公开的包含基于PGM和ZPGM的催化剂的混合TWC系统可以替代纯的基于PGM的废气处理系统。

公开(公告)号：US20180141031A1

公开(公告)日：2018-05-24

申请号：US15358827

申请日：2016-11-22

Applicant: Clean Diesel Technologies, Inc.

Inventor： Zahra Nazarpoor ,  Stephen J. Golden

IPC: B01J35/04 ,  B01J23/00 ,  B01J23/40 ,  B01J23/889 ,  B01J23/89 ,  B01J23/58 ,  B01J23/44 ,  B01J23/46 ,  B01J35/00 ,  B01D53/94 ,  F01N3/28

CPC classification number: B01J35/04 ,  B01D53/945 ,  B01D53/9468 ,  B01D53/9472 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/2042 ,  B01D2255/2065 ,  B01D2255/20707 ,  B01D2255/20715 ,  B01D2255/2073 ,  B01D2255/20738 ,  B01D2255/20761 ,  B01D2255/2092 ,  B01D2255/40 ,  B01D2255/405 ,  B01D2255/9025 ,  B01D2255/9027 ,  B01D2255/9032 ,  B01D2255/908 ,  B01J23/005 ,  B01J23/40 ,  B01J23/44 ,  B01J23/464 ,  B01J23/58 ,  B01J23/8892 ,  B01J23/8986 ,  B01J35/0006 ,  B01J2523/00 ,  F01N3/101 ,  F01N2510/068 ,  F01N2510/0682 ,  F01N2510/0684 ,  Y02T10/22 ,  B01J2523/3712 ,  B01J2523/822 ,  B01J2523/842

Abstract: Multi-zoned synergized-platinum group metals (SPGM) catalysts with significant catalytic capabilities are disclosed. The multi-zoned SPGM catalysts are produced according to catalyst configurations including OC layers of ultra-low PGM loadings, alone or in combination with a base metal oxide, which are deposited onto either mixtures of doped ZrO2 and oxygen storage materials (OSM) or OSM alone. Further, the multi-zoned SPGM catalysts further include zoned impregnation layers with PGM, alone or in combination with Ba loadings. Additionally, three-zoned SPGM catalysts are produced including front and back zone catalysts that include binary spinel oxide compositions. Conversion performance of the aged SPGM catalysts and an aged PGM-based OEM catalyst are tested employing TWC low perturbation isothermal oscillating, isothermal steady-state sweep, and light-off test methodologies. Test results confirm the SPGM catalysts including ultra-low PGM loadings and spinel-based ZPGM WC layer are capable of providing significant conversion performance that is comparable to high PGM-based OEM catalyst.

公开(公告)号：US20170095803A1

公开(公告)日：2017-04-06

申请号：US14872532

申请日：2015-10-01

Applicant: Clean Diesel Technologies, Inc.

Inventor： Zahra Nazarpoor ,  Stephen J. Golden

IPC: B01J27/25 ,  B01J37/04 ,  B01J37/02 ,  B01J37/00 ,  B01J23/63 ,  B01J37/08

CPC classification number: B01J27/25 ,  B01D53/944 ,  B01D53/945 ,  B01D2255/1021 ,  B01D2255/2061 ,  B01D2255/2063 ,  B01D2255/20715 ,  B01D2255/2073 ,  B01D2255/2092 ,  B01D2255/30 ,  B01D2255/402 ,  B01D2255/9022 ,  B01D2258/012 ,  B01J23/002 ,  B01J23/34 ,  B01J23/42 ,  B01J37/0244 ,  B01J37/04 ,  B01J37/08 ,  Y02T10/22

Abstract: Sulfur-resistant synergized platinum group metals (SPGM) catalysts with significant oxidation capabilities are disclosed. Catalytic layers of SPGM catalyst samples are produced using conventional synthesis techniques to build a washcoat layer completely or substantially free of PGM material. The SPGM catalyst includes a washcoat layer comprising YMnO3 perovskite and an overcoat layer including a Pt composition deposited on a plurality of support oxides with total PGM loading of about 5 g/ft3. Resistance to sulfur poisoning and catalytic stability is observed under 1.3 gS/L condition to assess the influence that selected support oxides have on the DOC performance of the SPGM catalysts. The results indicate SPGM catalysts produced to include a layer of low amount of PGM catalyst material deposited on a plurality of support oxides added to a layer of ZPGM catalyst material are capable of providing significant improvements in sulfur resistance of SPGM catalyst systems.

公开(公告)号：US20170095800A1

公开(公告)日：2017-04-06

申请号：US14872609

申请日：2015-10-01

Applicant: Clean Diesel Technologies, Inc.

Inventor： Zahra Nazarpoor ,  Stephen J. Golden

IPC: B01J23/755 ,  B01J23/847 ,  B01J23/83

CPC classification number: B01J23/755 ,  B01D53/945 ,  B01D2255/20715 ,  B01D2255/2073 ,  B01D2255/20753 ,  B01D2255/20761 ,  B01D2255/405 ,  B01D2255/65 ,  B01J21/005 ,  B01J23/005 ,  B01J23/83 ,  B01J23/8474 ,  B01J35/002 ,  B01J2523/00 ,  Y02T10/22 ,  B01J2523/17 ,  B01J2523/72 ,  B01J2523/847

Abstract: Variations of ZPGM catalyst material compositions including doped Cu—Mn spinel supported on doped zirconia support oxide are disclosed. The disclosed ZPGM catalyst compositions include a small substitution of Ni within the A-site or B-site cation of a Cu—Mn spinel supported on doped zirconia support oxide, and produced by the incipient wetness (IW) methodology. Bulk powder ZPGM catalyst compositions are subjected to XRD analyses to determine the spinel phase formation and stability. Additionally, bulk powder ZPGM catalyst compositions are subjected to a steady-state isothermal sweep test to determine NO, CO, and THC conversion. The ZPGM catalyst material compositions including Ni-doped Cu—Mn spinel supported on doped zirconia support oxide exhibit improved levels in NO and CO conversions, which can be employed in ZPGM catalysts for a plurality of TWC applications, thereby leading to a more effective utilization of ZPGM catalyst materials with high thermal and chemical stability in TWC products.

公开(公告)号：US20170095794A1

公开(公告)日：2017-04-06

申请号：US14873045

申请日：2015-10-01

Applicant: Clean Diesel Technologies, Inc.

Inventor： Zahra Nazarpoor ,  Stephen J. Golden

IPC: B01J23/34 ,  B01J23/889 ,  B01J23/00

CPC classification number: B01J23/83 ,  B01D53/944 ,  B01D2255/204 ,  B01D2255/2061 ,  B01D2255/2065 ,  B01D2255/20707 ,  B01D2255/2073 ,  B01D2255/20738 ,  B01D2255/20746 ,  B01D2255/20753 ,  B01D2255/65 ,  B01D2258/012 ,  B01J6/001 ,  B01J23/002 ,  B01J23/34 ,  B01J23/8892 ,  B01J2523/00 ,  B01J2523/24 ,  B01J2523/3712 ,  B01J2523/842 ,  B01J2523/845 ,  B01J2523/847 ,  B01J2523/36 ,  B01J2523/72 ,  B01J2523/47

Abstract: Zero-PGM (ZPGM) catalyst materials including pseudo-brookite compositions for use in diesel oxidation catalyst (DOC) applications are disclosed. The disclosed doped pseudo-brookite compositions include A-site partially doped pseudo-brookite compositions, such as, Sr-doped and Ce-doped pseudo-brookite compositions, as well as B-site partially doped pseudo-brookite compositions, such as, Fe-doped, Co-doped, Ni-doped, and Ti-doped pseudo-brookite compositions. The disclosed doped pseudo-brookite compositions, including calcination at various temperatures, are subjected to a DOC standard light-off (LO) test methodology to assess/verify catalyst activity as well as to determine the effect of the use of a dopant in an A-site cation or a B-site cation within a pseudo-brookite composition. The disclosed doped pseudo-brookite compositions exhibit higher NO oxidation catalyst activities when compared to bulk powder pseudo-brookite, thereby indicating improved thermal stability and catalyst activity when using a dopant in an A-site cation or in a B-site cation within a pseudo-brookite composition.

公开(公告)号：US20160361710A1

公开(公告)日：2016-12-15

申请号：US15182306

申请日：2016-06-14

Applicant: Clean Diesel Technologies, Inc.

Inventor： Zahra Nazarpoor ,  Stephen J. Golden

IPC: B01J23/889 ,  B01D53/94 ,  B01J35/02 ,  C01G45/12 ,  B01J23/00

CPC classification number: B01J23/8892 ,  B01D53/945 ,  B01D2255/2073 ,  B01D2255/20761 ,  B01D2255/405 ,  B01D2255/65 ,  B01D2255/908 ,  B01J23/005 ,  C01G3/02 ,  C01G45/02 ,  C01G45/1221 ,  C01G45/1235 ,  C01P2002/72 ,  C01P2002/85 ,  C01P2004/04 ,  Y02C20/10 ,  Y02T10/22

Abstract: The present disclosure describes zero-platinum group metals (ZPGM) material compositions including binary Cu—Mn spinel oxide powders that possess stable reduction/oxidation (redox) reversibility useful for TWC and oxygen storage material (OSM) applications. The redox behavior of Cu—Mn spinel oxide powders is analyzed under oxidation-reduction environments to determine spinel structure stability. The XRD, TPR and XPS analyses confirm the redox stability and reversibility of the Cu—Mn spinel oxide.

Abstract translation: 本公开描述了零铂族金属（ZPGM）材料组合物，包括具有用于TWC和储氧材料（OSM）应用的稳定还原/氧化（氧化还原）可逆性的二元Cu-Mn尖晶石氧化物粉末。 在氧化还原环境下分析了Cu-Mn尖晶石氧化物粉末的氧化还原行为，以确定尖晶石结构的稳定性。 XRD，TPR和XPS分析证实了Cu-Mn尖晶石氧化物的氧化还原稳定性和可逆性。

公开(公告)号：US20160354765A1

公开(公告)日：2016-12-08

申请号：US14732379

申请日：2015-06-05

Applicant: Clean Diesel Technologies, Inc.

Inventor： Randal L. Hatfield ,  Zahra Nazarpoor ,  Johnny T. Ngo ,  Stephen J. Golden

IPC: B01J23/847 ,  B01D53/94 ,  B01J35/00 ,  B01J35/02 ,  B01J23/20 ,  B01J23/46

CPC classification number: B01J23/8474 ,  B01D53/945 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/207 ,  B01D2255/20715 ,  B01D2255/2092 ,  B01D2255/40 ,  B01D2255/9022 ,  B01D2255/9025 ,  B01D2255/908 ,  B01J23/20 ,  B01J35/0006 ,  B01J37/0244 ,  Y02T10/22

Abstract: The present disclosure describes support oxides, including include Niobium Oxide, which are employed in three-way catalytic (TWC) systems. Disclosed herein are TWC sample systems that are configured to include a substrate and one or more of a washcoat layer, an impregnation layer, and/or an overcoat layer. The disclosed one or more of washcoat layer and/or overcoat layer are formed using a slurry that includes an oxide mixture and an Oxygen Storage Material. The disclosed oxide mixtures include niobium oxide (Nb2O5), zirconia, and alumina. Further, other disclosed oxide mixtures additionally include NiO.

Abstract translation: 本公开内容描述了用于三元催化（TWC）系统的载体氧化物，包括包括氧化铌。 本文公开了被配置为包括基底和一个或多个修补基面涂层，浸渍层和/或外涂层的TWC样品系统。 使用包括氧化物混合物和氧气存储材料的浆料形成所公开的一种或多种修补基面涂层和/或外涂层。 公开的氧化物混合物包括氧化铌（Nb 2 O 5），氧化锆和氧化铝。 此外，其它公开的氧化物混合物还包括NiO。

公开(公告)号：US09511358B2

公开(公告)日：2016-12-06

申请号：US14503003

申请日：2014-09-30

Applicant: Clean Diesel Technologies, Inc.

Inventor： Zahra Nazarpoor ,  Stephen J. Golden

IPC: B01J29/068 ,  B01J23/63 ,  B01J23/62 ,  B01J23/56 ,  B01J23/00 ,  B01J23/34 ,  B01J23/72 ,  B01D53/94 ,  B01J23/89 ,  C01B3/40 ,  C08K3/00 ,  H01M4/00 ,  C01B13/02 ,  C08K3/22 ,  B01J37/02

CPC classification number: B01J29/068 ,  B01D53/944 ,  B01D53/945 ,  B01D2255/405 ,  B01J23/005 ,  B01J23/34 ,  B01J23/56 ,  B01J23/626 ,  B01J23/63 ,  B01J23/72 ,  B01J23/8933 ,  B01J23/8986 ,  B01J37/0244 ,  C01B3/40 ,  C01B13/0281 ,  C01B2203/0233 ,  C01B2203/1041 ,  C01B2203/1094 ,  C08K3/00 ,  C08K3/22 ,  H01M4/00 ,  Y02P20/52 ,  Y02T10/22 ,  C08L23/02

Abstract: Spinels having a general formula of AB2O4, where A and B are a transition metal but not the same transition metal are disclosed. Spinel and spinel compositions of the application are useful in various applications and methods as further described.

Abstract translation: 公开了具有通式AB 2 O 4的尖晶石，其中A和B是过渡金属，但不是相同的过渡金属。 应用的尖晶石和尖晶石组合物可用于进一步描述的各种应用和方法中。

公开(公告)号：US09486784B2

公开(公告)日：2016-11-08

申请号：US14333846

申请日：2014-07-17

Applicant: Clean Diesel Technologies, Inc.

Inventor： Zahra Nazarpoor ,  Stephen J. Golden

IPC: B01J23/00 ,  B01J23/32 ,  B01J23/70 ,  B01J23/72 ,  B01J23/889 ,  B01J23/20 ,  C01G45/12 ,  B01J37/03 ,  B01J35/00 ,  B01D53/94

CPC classification number: B01J23/8892 ,  B01D53/945 ,  B01D2255/20715 ,  B01D2255/2073 ,  B01D2255/20761 ,  B01D2255/40 ,  B01D2255/405 ,  B01D2255/908 ,  B01J23/005 ,  B01J23/20 ,  B01J35/002 ,  B01J37/035 ,  C01G45/1242 ,  C01P2006/90 ,  Y02T10/22

Abstract: The effect of aging temperature on oxygen storage materials (OSM) substantially free from platinum group (PGM) and rare earth (RE) metals is disclosed. Samples of ZPGM-ZRE metals OSM, hydrothermally aged at a plurality of high temperatures are found to have significantly high oxygen storage capacity (OSC) and phase stability than conventional PGM catalysts with Ce-based OSM. ZPGM-ZRE metals OSM includes a formulation of Cu—Mn stoichiometric spinel structure deposited on Nb—Zr oxide support and may be converted into powder to be used as OSM application or coated onto catalyst substrate. ZPGM-ZRE metals OSM, after aging condition, presents enhanced level of thermal stability and OSC property which shows improved catalytic activity than conventional PGM catalysts including Ce-based OSM. ZPGM-ZRE metals OSM may be suitable for a vast number of applications, and more particularly in underfloor catalyst systems.

Abstract translation: 公开了老化温度对基本上不含铂族（PGM）和稀土（RE）金属的储氧材料（OSM）的影响。 发现在多个高温下水热老化的ZPGM-ZRE金属OSM样品具有比具有Ce基OSM的常规PGM催化剂显着高的储氧能力（OSC）和相稳定性。 ZPGM-ZRE金属OSM包括沉积在Nb-Zr氧化物载体上的Cu-Mn化学计量的尖晶石结构的配方，并且可以转化为粉末以用作OSM应用或涂覆到催化剂衬底上。 ZPGM-ZRE金属OSM在老化条件下表现出比常规PGM催化剂（包括Ce基OSM）更高的热稳定性和OSC性能，其显示出更好的催化活性。 ZPGM-ZRE金属OSM可能适用于广泛的应用，尤其适用于地板下的催化剂体系。

公开(公告)号：US09486783B2

公开(公告)日：2016-11-08

申请号：US14251186

申请日：2014-04-11

Applicant: Clean Diesel Technologies Inc.

Inventor： Zahra Nazarpoor ,  Stephen J. Golden

IPC: B01J23/83 ,  B01J23/889 ,  B01D53/94 ,  B01J23/00 ,  B01J23/66 ,  B01J23/68 ,  B01J37/02

CPC classification number: B01J23/8892 ,  B01D53/944 ,  B01D53/945 ,  B01D2255/104 ,  B01D2255/206 ,  B01D2255/2061 ,  B01D2255/2063 ,  B01D2255/2065 ,  B01D2255/2066 ,  B01D2255/2068 ,  B01D2255/20715 ,  B01D2255/20761 ,  B01D2255/65 ,  B01D2255/9022 ,  B01D2255/908 ,  B01J23/002 ,  B01J23/005 ,  B01J23/66 ,  B01J23/688 ,  B01J23/83 ,  B01J37/0244 ,  B01J37/0246 ,  Y02A50/2341 ,  Y02T10/22 ,  Y10S502/52712

Abstract: A diesel oxidation catalyst (DOC) system for the treatment of exhaust gas emissions, including oxidation of nitrogen oxides (NO), unburned hydrocarbons (HC), and carbon monoxide (CO) is disclosed. Fresh and hydrothermally aged Zero-PGM (ZPGM) DOC samples are prepared and configured with an alumina-based washcoat on ceramic substrate, overcoat including doped Zirconia support oxide, and impregnation layer of Cu—Mn spinel of selected base metal loadings. Testing of fresh and hydrothermally aged ZPGM DOC system samples including Cu—Mn spinel is developed to evaluate the performance of Cu—Mn spinel active phase in oxidation CO, HC, and NO, as well as production of NO2. Key to improvement in light-off performance and NO oxidation is to have a diesel oxidation catalyst that is substantially PGM-free and available for a plurality of applications in lean burn engine operations.

Abstract translation: 公开了一种用于处理废气排放的柴油氧化催化剂（DOC）系统，包括氮氧化物（NO），未燃碳氢化合物（HC）和一氧化碳（CO）的氧化。 新鲜和水热老化的零PGM（ZPGM）DOC样品在陶瓷衬底上的氧化铝基洗涂层，包括掺杂的氧化锆载体氧化物的外涂层和选定的贱金属负载的Cu-Mn尖晶石的浸渍层制备并配置。 开发了新鲜和水热老化的ZPGM DOC系统样品（包括Cu-Mn尖晶石）的测试，以评估Cu-Mn尖晶石活性相在氧化CO，HC和NO中的性能以及NO2的产生。 提高熄火性能和NO氧化的关键是具有基本上无PGM的柴油氧化催化剂，并且可用于稀燃燃烧发动机操作中的多种应用。